I had the same issue while adding the dependency for the first time in the IntelliJ after closing and opening again the project the dependency started downloading and after few mins all the dependencies of the RestAssured(4.3.0) got downloaded and resolved.

• The rest-assured dependency you are using is providing a transitive dependency on commons-codec:commons-codec:1.11, which has a known security vulnerability. The warning is indicating that there's a potential risk of exposing sensitive information to unauthorized actors due to this vulnerability.

• To remove this warning, you can either exclude the vulnerable dependency from the rest-assured dependency or add the latest version of commons-codec as a separate dependency

<dependency>
    <groupId>io.rest-assured</groupId>
    <artifactId>rest-assured</artifactId>
    <version>5.3.0</version>
    <scope>test</scope>
    <exclusions>
        <exclusion>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
        </exclusion>
    </exclusions>
</dependency>

OR

<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.15</version>
</dependency>